Hubitat C8 Unresponsive, C8 Locked Up, C8 Frozen,

[bobbyD]

@King

been having similar issues

No, your issue is not the same:

C-8 Hubitat Unresponsive (can't find hub in app)

There have been reports over the years that Sylvania bulbs can cause havoc in the Zigbee network. These bulbs are repeaters, meaning that other devices can connect to the hub through them. When one bulb misbehaves, any devices connected to the bulb will likely stop working.